Streaming Markdown Table: CSS AI Animation

Streaming Markdown Table

A markdown table from a chat answer filling in cell by cell, each value lifting out of a blur along its row's hairline, then a Popular badge springs onto the Team row once the table is done.

Also known as: ai table streaming animation, markdown table animation, table rows animation css, chatgpt table loading.

Plan	Seats	Per month
Starter	3	$0
Team Popular	25	$12
Business	100	$24
Enterprise	Unlimited	Custom

Color Base size 16px Dark background

HTML

<div class="aia-streaming-table" role="status" aria-label="Writing a table">
  <table class="aia-streaming-table-grid">
    <thead><tr><th>Plan</th><th>Seats</th><th>Per month</th></tr></thead>
    <tbody>
      <tr><td style="--i: 0">Starter</td><td style="--i: 1">3</td><td style="--i: 2">$0</td></tr>
      <tr><td style="--i: 3">Team <span class="aia-streaming-table-badge">Popular</span></td><td style="--i: 4">25</td><td style="--i: 5">$12</td></tr>
      <tr><td style="--i: 6">Business</td><td style="--i: 7">100</td><td style="--i: 8">$24</td></tr>
      <tr><td style="--i: 9">Enterprise</td><td style="--i: 10">Unlimited</td><td style="--i: 11">Custom</td></tr>
    </tbody>
  </table>
</div>

CSS

@property --aia-streaming-table-t {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}
.aia-streaming-table {
  --c: var(--aia-color, #7c5cff);
  font-size: var(--aia-size, 16px);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.4;
  --t: var(--aia-streaming-table-t);
  width: 23em;
  max-width: 100%;
  animation: aia-streaming-table-run 9s linear infinite;
}
.aia-streaming-table-grid {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}
.aia-streaming-table-grid th {
  padding: 0 0 0.5em;
  text-align: left;
  font-size: 0.72em;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in srgb, currentColor 50%, transparent);
}
.aia-streaming-table-grid th:last-child,
.aia-streaming-table-grid td:last-child {
  text-align: right;
}
.aia-streaming-table-grid tbody {
  animation: aia-streaming-table-fade 9s linear infinite;
}
.aia-streaming-table-grid td {
  --r: clamp(0, calc((var(--t) - var(--i)) * 2.2), 1);
  padding: 0.5em 0;
  border-top: 1px solid color-mix(in srgb, currentColor 11%, transparent);
  white-space: nowrap;
  opacity: var(--r);
  filter: blur(calc((1 - var(--r)) * 0.15em));
}
.aia-streaming-table-grid td > * {
  vertical-align: 0.1em;
}
.aia-streaming-table-grid td:first-child {
  font-weight: 500;
}
.aia-streaming-table-badge {
  --b: clamp(0, calc((var(--t) - 12.2) * 3), 1);
  display: inline-block;
  margin-left: 0.4em;
  padding: 0.15em 0.5em;
  border-radius: 99em;
  background: color-mix(in srgb, var(--c) 14%, transparent);
  color: color-mix(in srgb, var(--c) 75%, currentColor);
  font-size: 0.7em;
  font-weight: 600;
  opacity: var(--b);
  transform: scale(calc(0.4 + 0.6 * var(--b) + 1.2 * var(--b) * (1 - var(--b))));
}
@keyframes aia-streaming-table-run {
  0%, 6%    { --aia-streaming-table-t: 0; }
  68%       { --aia-streaming-table-t: 12; }
  74%, 100% { --aia-streaming-table-t: 13; }
}
@keyframes aia-streaming-table-fade {
  0%, 90%   { opacity: 1; }
  97%, 100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .aia-streaming-table,
  .aia-streaming-table-grid tbody { animation: none; }
  .aia-streaming-table { --aia-streaming-table-t: 13; }
}

@media (prefers-reduced-motion: reduce) {
  .aia-streaming-table, .aia-streaming-table *, .aia-streaming-table::before, .aia-streaming-table::after, .aia-streaming-table *::before, .aia-streaming-table *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

Color: set --aia-color on the element or a parent. Currently previewing #3b82f6.
Base size: set --aia-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
Speed: change the duration on the transition or animation shorthand. Staggered delays are relative, so they keep their rhythm.
Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.

Streaming Markdown Table

HTML

CSS

Customizing this snippet

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